There's a new Doctor in the TARDIS. But this regeneration's a bit different.

The BBC announced on Sunday that Jodie Whittaker will play the Time Lord after the current star, Peter Capaldi, leaves. She'll be the first female Doctor in the show's almost 54-year history.

The first run of the show began in 1963 and continued until 1989. It was rebooted in 2005 but continued the timeline of the original show.

The internet was, perhaps predictably, split on how it felt about this change.

If you're not familiar with "Doctor Who," here's a bit of background: The Doctor is an alien who, when badly injured, "regenerates" a new body. Each incarnation looks completely different — they're played by different actors.